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STEEL

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STAINLESS STEEL FASTENERS

Parmar Steel specializes in supplying high-quality stainless steel fasteners, catering to diverse industrial needs globally. Their product line includes a wide range of bolts, nuts, washers, and screws, all crafted from premium-grade stainless steel for superior durability and corrosion resistance. Parmar Steel fasteners are meticulously manufactured to meet stringent quality standards, ensuring reliability in various applications from construction to automotive and aerospace industries. With a commitment to excellence, they offer customized solutions and competitive pricing, backed by extensive industry experience and technical expertise. Parmar Steel continues to innovate, providing robust fastening solutions that uphold safety, efficiency, and performance across industries worldwide.

Specifications	ASTM A193 & ASME SA193 for bolts and ASTM A194 and ASME SA194
Standard	IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI and all International Standards
Bolts Size	M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160
Length of SS Fasteners	3 mm to 200 mm
SS Studs, Bolts Threads	BSF, UNF METRIC, UNC, BSW or as required
Standard of SS Fasteners	ANSI – American National Standards Institute: SS Stud Bolt length are defined in ASME B16.5 standard, ANSI B 28.2.4 1M, ANSI B 18.2.4 2M, ASME B18.5, SS Hex nuts are defined in ASME B18.2.2, DIN:DIN 933, DIN 931, DIN 970, DIN 934, UTS – Unified Thread Standard : UNF, NPT, NPTF, UNS, UNC, UNEF, ISO – International Organization for Standardization ISO 4033, : ISO 4032, JIS standards
raw materials of Source	JSPL, Usha Martin, Tata, Mukund, RINL, Dhamm etc.
Form of SS Fasteners	Square, Hex, Threading as per Gauge, Round Etc.
Head drive	Phillips, Slotted, Phillips/Slot, Six-Lobe etc
Test Certificate of SS bolting	as per EN 10204 / 3.1 Manufacturer Test Certificate
Finishing of SS Fasteners	Zinc white, (yellow, black, blue), black oxide, Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated, SS: Passivated Self-Colour, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Sherardized, Stainless Steel, some special one like DACROMET and Mechanically Applied coating
Process of Production	M2-M24: Cold Froging, hot forging M24-M100, machining and CNC for Customized connecting element
Surface Coating of SS bolting materials	Xylon Coated Fasteners, Phosphate Coated Fasteners, Hot Dipped Galvanizing Coated Fasteners, Teflon Coated Fasteners, Zinc Coated Fasteners, Cadmium Coated Fasteners, Ptfe Coated Stainless Steel Fasteners, All surface finishes offered including Geomet & PTFE, Galvanised, Zinc, Electroless Nickel, Dacromet, Sherardized
Packing of SS Fasteners	IN BULK: pallet, canton, carton / Small Boxs / pallet or customer request

DIMENSIONS OF STAINLESS STEEL NUTS AND BOLTS

NOMINAL SIZE (D)	BODY DIAMETER		HEAD tdICKNEASTM A193		ACROASTM A193 tdE FLATS		ACROASTM A193 CORNERS
	D (MAX)	D (MIN)	H (MAX)	H (MIN)	F (MAX)	F (MIN)	C (MAX)	C (MIN)
m10	10.00	9.78	6.63	6.17	17.00	15.73	18.48	17.77
m12	12.00	11.73	7.76	4.24	19.00	17.73	20.78	20.03
m14	14.00	13.73	9.09	8.51	22.00	20.67	24.25	23.35
m16	16.00	15.73	10.32	9.68	24.00	23.67	27.71	26.75
m20	20.00	19.67	12.88	12.12	30.00	29.16	34.64	32.95
m24	24.00	23.67	15.44	14.56	36.00	35.00	41.57	39.55
m30	30.00	29.67	19.48	17.92	46.00	45.00	53.12	50.85
m36	36.00	35.61	23.38	21.63	55.00	53.80	63.51	60.79
m42	42.00	41.38	26.97	25.03	65.00	62.90	75.06	71.71
m48	48.00	47.38	31.07	28.93	75.00	72.60	86.60	82.76
m56	56.00	55.26	36.2	33.80	85.00	82.20	98.15	93.71
m64	64.00	63.26	41.32	38.68	95.00	91.80	109.70	104.65
m72	72.00	71.26	46.45	43.55	105.00	101.40	121.24	115.60
m80	80.00	79.26	51.58	48.42	115.00	111.00	132.72	126.54
m90	90.00	89.13	57.74	54.26	130.00	125.50	150.11	143.07
m100	90.00	99.13	63.9	60.10	145.00	140.00	167.43	159.60

STAINLESS STEEL NUTS DIMENSION CHART

Nominal Size or Basic Major Thread Diameter		F			G		H
		Width Across Flats			Width Across Corners		Thickness
		Basic	Max	Min	Max	Min	Basic	Max	Min
1/4	.2500	7/16	.438	.428	.505	.488	7/32	.226	.212
5/16	.3125	1/2	.500	.489	.577	.557	17/64	.273	.258
3/8	.3750	9/16	.562	.551	.650	.628	21/64	.337	.479
7/16	.4375	11/16	.688	.675	.794	.768	3/8	.385	.365
1/2	.5000	3/4	.750	.736	.866	.840	7/16	.448	.427
9/16	.5625	7/8	.875	.861	1.010	.982	31/64	.496	.473
5/8	.6250	15/16	.938	.922	1.083	1.051	35/64	.559	.535
3/4	.7500	1-1/8	1.125	1.088	1.299	1.240	41/64	.665	.617
7/8	.8750	1-5/16	1.312	1.269	1.516	1.447	3/4	.776	.724
1	1.0000	1-1/2	1.500	1.450	1.732	1.653	55/64	.887	.831
1-1/8	1.1250	1-11/16	1.688	1.631	1.949	1.859	31/32	.999	.939
1-3/8	1.3750	2-1/16	2.062	1.994	2.382	2.273	1-11/64	1.206	1.138
1-1/2	1.500	2-1/4	2.250	2.175	2.598	2.480	1-9/32	1.ASTM A194 GR. 8	1.245
1-5/8	1.6250	2-7/16	2.438	2.356	2.815	2.686	1-25/64	1.429	1.353
1-3/4	1.7500	2-5/8	2.625	2.538	3.031	2.893	1-1/2	1.540	1.460
2	2.0000	3	3.000	2.900	3.464	3.306	1-23/32	1.763	1.675
2-1/4	2.2500	3-3/8	3.375	3.263	3.897	3.719	1-15/16	1.986	1.890
2-1/2	2.5000	3-3/4	3.750	3.625	4.330	4.133	2-5/32	2.209	2.105
2-3/4	2.7500	4-1/8	4.125	3.988	4.763	4.546	2-3/8	2.431	2.319

STAINLESS STEEL HEX BOLTS TORQUE CHART

Torque Specifications
Bolt Size Inches or #	Threads Per Inch	Standard Dry Torque in Inch-Pounds
Bolt Size Inches or #	Threads Per Inch	304 SS	316 SS
#2	56	2.5	2.6
#2	64	3.0	3.2
#3	48	3.9	4.0
#3	56	4.4	4.6
#4	40	5.2	5.5
#4	48	6.6	6.9
#5	40	7.7	8.1
#5	44	9.4	9.8
#6	32	9.6	10.1
#6	40	12.1	12.7
#8	32	19.8	20.7
#8	36	22.0	23.0
#10	24	22.8	23.8
#10	32	31.7	33.1
Bolt Size Inches or #	Threads Per Inch	Standard Dry Torque in Inch-Pounds
Bolt Size Inches or #	Threads Per Inch	304 SS	316 SS
1/4	20	75.2	78.8
1/4	28	94.0	99.0
5/16	18	132	138
5/16	24	142	147
3/8	16	236	247
3/8	24	259	271
7/16	14	376	393
7/16	20	400	418
1/2	13	517	542
1/2	20	541	565
Bolt Size Inches or #	Threads Per Inch	Standard Dry Torque in Inch-Pounds
Bolt Size Inches or #	Threads Per Inch	304 SS	316 SS
9/16	12	682	713
9/16	18	752	787
5/8	11	1110	1160
5/8	18	1244	1301
3/4	10	1530	1582
3/4	16	1490	1558
7/8	9	2328	2430
7/8	14	2318	2420
1	8	3440	3595
1	14	3110	3250
Bolt Size Inches or #	Threads Per Inch	Standard Dry Torque in Foot-Pounds
Bolt Size Inches or #	Threads Per Inch	304 SS	316 SS
1 1/8	7	413	432
1 1/8	12	390	408
1 1/4	7	523	546
1 1/4	12	480	504
1 1/2	6	888	930
1 1/2	12	703	732

WEIGHT OF SS BOLTS AND NUTS

MM THREADS AS PER IS 1363/67
APPROXIMATE WEIGHT IN KGS FOR 100 NOS
LENGTH	D I A M E T E R
LENGTH	M 5	M 6	M 8	M 10	M 12	M 14	M 16	M 18	M 20	M 22
16 mm	0.448	0.743	1.590	3.211
20 mm	0.598	0.812	1.711	3.411	4.892
25 mm	0.660	0.897	1.871	3.660	5.252	8.170
30 mm	0.737	1.010	2.070	3.912	5.574	9.690	10.707		18.657
35 mm	0.804	1.120	2.271	4.223	5.974	10.000	11.416	16.026	19.608
40 mm	0.881	1.230	2.470	4.533	6.410	10.288	12.107	16.667	20.747
45 mm	0.958	1.340	2.671	4.840	6.859	10.504	12.821	17.241	21.739
50 mm	1.030	1.450	2.870	5.155	7.299	11.261	13.624	17.857	22.727	28.409
55 mm		1.560	3.071	5.464	7.740	11.628	14.409	18.868	23.810	30.120
60 mm		1.670	3.270	5.774	8.183	12.255	15.244	20.000	25.126	32.051
65 mm		1.781	3.472	6.083	8.621	12.626	16.026	21.008	26.455	34.014
70 mm		1.890	3.671	6.394	9.058	12.987	16.835	22.124	27.778	35.461
75 mm		2.000	3.873	6.702	9.506	13.228	17.606	23.256	29.070	39.063
80 mm		2.111	4.072	7.013	10.000	13.889	18.248	24.510	30.303	40.000
90 mm			4.472	7.634	10.917	14.925	19.841	26.042	33.113	41.667
100 mm			4.873	8.251	11.820	16.340	21.459	27.778	35.714	46.296
110 mm				8.881	12.723	17.730	23.041	31.250	38.168	47.170
120 mm				9.506	13.624	18.797	24.631	32.895	40.984	50.000
130 mm				10.101	14.535	20.000	26.316	34.722	43.478	52.632
140 mm				10.707	15.432	20.833	27.933	35.461	46.296	55.556
150 mm				11.312	16.340	22.222	29.412	37.594	48.544	58.824
160 mm				11.905	17.241	24.272	31.056	40.984	50.505	61.728
170 mm				12.500	18.116		32.680		53.191	64.935
180 mm				13.123	19.011	26.882	34.247		55.556	67.568
190 mm				13.736	19.920		35.971		58.140	70.423
200 mm				14.327	20.833	29.586	37.594	49.020	60.976	73.529
220 mm				15.528	22.624		40.650		65.789	79.365
240 mm				16.722	24.510		43.860		71.429	84.746
250 mm				17.301	25.381		45.455		74.627	87.719
260 mm				17.921	26.316		47.170		76.923	90.909
280 mm				19.157	28.090		50.505		81.967	98.039
300 mm				20.325	29.940		53.763		87.719	104.167
320 mm					31.646		56.818		92.593
340 mm					33.557		60.241		98.039
360 mm					35.211		63.291		104.167
380 mm					37.037		66.667		108.696
400 mm					39.063		69.444		113.636

STAINLESS STEEL THREADED ROD SIZE CHART

Diameter in Mm	Nut Size in mm	Jam Nut	Hex Nut	Nylock Nut
5	2.5	1.6	2	-
4	2	1.2	1.6	-
7	4	2.2	3.2	5
5.5	3	1.8	2.4	4
8	5	2.7	4	5
11	7	3.5	5.5	-
17	10	5	8	10
10	6	3.2	5	6
13	8	4	6.5	8
19	12	6	10	12
24	16	8	13	16
30	20	10	16	20
22	14	7	11	14
27	18	9	15	18.5

SIZES OF STAINLESS STEEL U BOLTS

Nuts Size (mm)	Diameter* (mm)	Height (mm)
Nuts Size (mm)	Diameter* (mm)	Hex Nuts	Jam Nuts	Nylock Nuts
2	4	1.6	1.2	-
2.5	5	2	1.6	-
3	5.5	2.4	1.8	4
4	7	3.2	2.2	5
5	8	4	2.7	5
6	10	5	3.2	6
7	11	5.5	3.5	-
8	13	6.5	4	8
10	17	8	5	10
12	19	10	6	12
14	22	11	7	14
16	24	13	8	16
18	27	15	9	18.5
20	30	16	10	20
*This is the diameter across the flats. It is also the size of wrench to use.

We Shine For Premier Quality Product

The company has over two decade long record of servicing customers in India as well as all over the world. The company attaches significant emphasis on ensuring adherence to quality standards at all levels.

The basic thrust of the quality philosophy is summed up in the company's Quality Policy which serves as the bench mark of all functions executed by the company. Strict quality assurance system is being followed in all our departments and Total Quality Management is applied to streamline and all the procedures and practices in operation to achieve high standard of efficiency.